Improvemessst in roiling-iviiils



2 Sheets--Sheet 1. S W A N.

Rolling-Mills.

Patented May 26,1874.

L I I u l 75 uff @gmf 2 Sheets--Sheet 2. l. SWAN.

l Rolling-Mills, m N0,]5Vl,449, Patented May 26,1874.

JAMES SVAN, OF SEYMOUR, CONNECTICUT.

IMPROVEMENT IN ROLLING-MILLS.

Specification forming part of Letters Patent No. LliP, dated May 26,1874; application filed May 11, 1874. l

To all whom it may concern:

Be it known that I, J AMES SWAN, of Scymour, in the county of New Havenand State of Connect-icut, have invented a new Improvement inRolling-Mills; and I do hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this spccication, andrepresent, in-

I `igure l, a front view 5 Fig. 2, an end view, (left hand5) Fig. 8, anend view, (right hand5) and in Fig. 4, a detached view. Y

This invention relates to an improvement in mills for rolling metals,the object being to make the roll self-adjusting, so as to roll tapersor irregular thicknesses, and it consists in the arrangement of a cambeneath each of the bearings of the lower roll, the axis of the camsvertical and supporting the roll, the cams prevented from other thanaxial vertical movement, and beneath each of these cams a revolvingwheel, the axis of which is inline with the axis of the said cams, theworking-face of the said cams bearing upon a point or points on saidwheels, so that, the wheels revolving, the said bearing-points willtravel upon the face of the cams and force them (the cams) to rise orallow them to fall, according to the configuration of the face of thecam, and impart a corresponding rise and fall to the lower roll, as morefully hereinafter specied.

A A are the uprights, which support the rolls and operative mechanism.B, the upper roll, is hung in guided bea-rings C, and these bearingssuspended by the adjusting-screws D, in the usual manner. E, the lowerroll, rests in guided bearings F. The bearings F rest upon a verticalshaft, a, firmly supported in a vertical position in the uprights, so asto be moved freely up and down, but positively prevented from rotation.On the lower end of the shaft a is a cam, H, the face of which is aroundthe luider surface, and is irregular in accordance with the requiredrising and falling of the roll supported thereon. Beneath each of thesecams is a wheel, I, the axis of which is in line with the axis of thecam H above. These wheels I are driven or caused to revolve byworin-gear (7,011 a shaft, L, which receives its motion from the gearNon the upper roll. The wheels I are provided with correspondingbearing-points to travel upon the face of the cam. These bearing-pointsare, preferably, made by the arrangement of a roll, I, set in the wheel,its axis radial from the axis of the wheel. The wheels I, caused tosimultaneously revolve, cause the rolls b to run around under the faceof the respective cam above; hence the rise or depression on the face ofthe cam will cause the cam to be forced up or down accordingly, andimpart a corresponding rise and fall to the lower roll, and the metalpassing between the rolls will be varied in thickness, according to therise and fall of the roll. By this arrangement tapers or irregularthicknesses may be rolled, it only being essential to make the face ofthe cams a 'pattern for such variation. A succession of articles, as fiile-blanks,77 cutlery-blanks, &c.,may be formed by simply introducingthe piece at the proper time, which may be done by any of the knownfeeding devices. To cut oif the power and prevent the wheels I fromturning, aclutch, P, is arranged in the usual manner for connecting anddisconnecting power, but it is desirable that this disconnection shouldoccur always at the same point, or some predetermined point. To do thisI attach to the shipper shaft R an arm, S, carrying a dog or pawl, t,which rides upon a iiange, a, on one of the wheels I. In this ange isone or more notches, m, into which the dog t may fall. Then the clutchis in gear the dog rides upon the face of the flange a until it arrivesat the notch m, when it will be thrown into the said notch by a spring,T, this movement turning the shipper-shaft R and throwing out the clutchand stopping the revolution of the wheels I. In this position the rollsmay be used as an ordinary rolling-mill.

The clutch may be held in gear by a latch, f, to allow a continuedrevolution of the wheels I, and continued working of the mill, and whenreleased from the clutch the working of the wheels I will be arrestedwhen the notch is reached, as before described.

It will be readily seen that the cams H may be made to revolve, and thebearing-points stationary; or that the relative position ofthe cams Hand wheels I may be changed (it bcing essential that the axis bevertical) without departing from this invention. I, therefore, wish tobe understood as embracing such colorable variation in the followingclaims.

I do not wish to be understood to claim as my invention giving to one ofa pair of rolls a combined rotary and reciprocating movement, as such Iam aware is not new; but

I do claiml. In combination with a pair of revolving` rolls, a cam, H,beneath and axially support- Ving each bearing of one roll, therevolving Wheels I in axial line with each of said cams, a point orpoints on said Wh eels traveling the face of said cams, so as to imparta recipro= eating movement to said supported roll corresponding to theface of said cam, substantially as described.

2. In combination with a pair of revolving rolls, the cams II and WheelsI, operating together as described, the dog t, the notched ange or Wheeln, and the clutch l?, all substantially as and for the purposespecified.

JAMES SWAN.

Vitn esscs:

F. A. RUGG,

G. WV. DIVINE.

